Method of and apparatus for casting



(No Model.) 4 SheetsSheet 1.

o. w. WEISS. METHOD OF AND APPARATUS FOR CASTING.

.No. 470,525. Patented Mar. 8, 1892.

INVENTOR (No ModeL) 4Sheets-Sheet 2.

0. W. WEISS. METHOD OF AND APPARATUS FOR CASTING. No. 470,525. Patented Mar.-8, 1892.

l I I I I i I I l l l I l l I l l l I I A INVENTORI WITNESSES: 6 A

6 H. w M

Attorney.

4 Sheets--Sheet 3.

INVENTOR:

Patented Mar. 8, 1892.

METHOD OF AND APPARATUS FOR CASTING.

zr WITNESSES:

(Nb Model.) 4 SheetS -Sheet 4.

' C. W. WEISS.

METHOD OF AND APPARATUS FOR GASTING..

N0. 470,525. Patented Mar. 8, 1892.

INVENTOR WITNESSES UNITED STATE PATENT OFFICE.

CARL TV. VVEISS,.OF BROOKLYN, NE? YORK.

METHOD OF AND APPARATUS FOR CASTING.

SPECIFICATION forming part'of Letters Patent No. 470,525, dated March 8, 1892.

Application filed October 19, 1891. fierlal No. 409.135. (No modell) improved method of and apparatus for castther treatment. a

in g various articles, and particularly to facilitate the production of small articles-such as gear and counting wheels for registers and the like-in a finished condition ready for use in the machines for which theyare designed without trimming orfiling or any fur- My improved method consists in forcing the material in a fluid state into the mold through a suitable ingate and in subsequently forcing a solid body outward through the material in the .mold and through or into said in gate, thereby expelling and cuttingoff all superfluous material.

My invention further consists in the appa ratus hereinafter described and claimed for carrying said method into efiect.

In the accompanying drawings, illustrating my invention, Figure 1 is a vertical central section of the improved apparatus, the plungers being shown in elevation. Fig. 2 is a top view of the same. Fig. 3 is a section on the line 00 a: of Fig. 2, parts being broken off to save space. Fig. 4 is a similar view on the line y y of Fig. 2. Figs. 5 and 6 are detailed sectional views on the lines o c and w 20, respectively, of Fig. 2. Fig. 7 is a detailed central section of the lower portion of the melting-pot. Figs. 8, 9, and 10 are detail views of diiferent parts of the mold represented as in position in Figs. land 2; and Fig. 11 is a perspective of the article produced by such mold in the condition in which it comes therefrom.

Like letters and numbers of reference indicate like parts in the several figures.

A melting-pot 10 (see Figs. 1, 2, and 7)- or other receptacle for the molten material is supported by asuitable frame or casing 11 in position to be kept at the necessary temper ature by a burner 12 or other convenient source of heat. In the bottom of the pot is formed a chamber 13 of uniform diameter, from the bottom or end of which extends a tube or conduit 14, which is provided, preferably above the normal level of the molten material in the pot, with anozzle 15-. A plunger 16 enters said chamber and is adapted to H move therein, being guided by a cross-bar 17 and operated by a convenienthandle 19, which may be pivoted at 20 on the upper portion of .the pot or casing. The lower end of the plum ger is bored axially, as at 21, to receive a valve 22, and is perforated laterally, as at 23, near the upper end of the axial bore. The valve maybe held in place with sufficient freedom of movement by a pin 24:, fixed in the upper end of the valve-stem and projecting into the lateral perforation 23. In order to prevent the accumulation in the chamber 13 of the usual gritty or other hard particles of greater specific gravity than the moltenmaterial, I form the bottom of the melting-pot proper with a depression or groove 10*, surrounding the upper end of the chamber 13 and preferably having a wall between the groove and-the chamber brought to an acute angle in cross-section, as shown in Figs. 1 and 7. The aforesaid particles as they descend will settle in the groove .10 and may be removed from time to time.

The mold maybe of any form and made up of such elements as may be rendered neces:

sary by the configuration of the article to be.

produced. The elements are combined and secured together to form a mold, which is separable, preferably into two parts, which may be designated as a and b, respectively. The

part a is apertured centrally, as at a, (see Figs. 1 and 3,) and is suitably formed. to fit or communicate with the nozzle 15. The part a is carried by a bar 25, which is pivoted or hinged upon'a pin 26, Fig. 2, and is provided with a suitable handle 27. The part1) of the mold is carried by a bar 28, which may be hinged upon the same pin 26, and is provided with a handle 29. -A pin 30 may be fixed to one of said bars to enter a hole 31 in the other to insure accurate alignment of the parts of the mold. In order that thebars may be adjusted in position to bring the aperture in the mold into accurate alignment with the nozzle 15, the pivot-pin 26 is carried by an arm 32, bolted to a bracket .33, which is secured to the frame 11. The arm and bracket are each slotted, as at 34 and 35, for the reception of the bolt 36. The partb of the mold is also apertured, as at (Z, Fig. ,4, in line with the aperture 0 of the part a for the reception of a plunger 37, which is of sufficient length to enter the aperture 0 when pushed in to its full extent andis of such size as to fit snugly therein. The plunger 37 is carried by a bar 38, which is pivotally supported, as-at 39, upon the bar 28. A stop-pin 40 may be fixed to the bar 28 to prevent excessive movement of the bar-38.

Pivoted upon the handle 27 of the bar 2511s a. lever 41, formed, as clearly shown in Fig; 5, with a shoulder'42' to engage the handle 29 of the bar 28 to hold the parts of the mold tightly together and with a cam-shaped end 43 to act upon said handle to force the parts of the mold apart. A second lever 44 (see Fig. 6) is also pivoted upon the handle 45 to engage the bar 38 and holdthe same from movement with the end of the plunger in close proxim ity to the inner end of the in'gate c, leaving only'a very narrow space for the ingress of the molten material.

The mold, which is shown in position in Figs. 1 and 2', and which is designed for the production of the combined gear and-number wheel, as shown in Fig. I0, is itself illustrated in Figs. 8 and 9. It comprises a body 50, which is screw-threaded to engage the bar 25, is adapted to receive the nozzle 15, is aperture'd, as at c,-f'orthe' passage of'the molten materialan' d' to receive with a snug fit the plunger 37, and isprovided with an enlargement of the bore to co operate with the plunger 37 for the formation of the hub of the wheel and with J radial slotsfo'r' the formation of wings to connect the hub with the outer portion or th e'shell. Thep'art t comprises, further, an annular disk 51, which is fastened to the bar 25 and is adapted to form the gear-teeth shown in Fig.

10. The part b of the mold is made up of a series of annular dislrs 52, 53', and 54 (shown in Fig. 10) and adapted to form the remaining portions ofv the wheel, as shown in Fig. 11.

I- have described this mold simply for the purpose of making the practice of my improved". metho'dand' the operation of the mechanism more easily understood g litl'li it is, obvio'us' that a mold of any other desired configuration might be used and any desired article produced, the mold being of such formation as to contain and permit the movefen t of a suitable plunger outward through the ingate. p v In the lightof the foregoing description my improved methodof casting maybe described,

, briefiy,as consisting in reducing the material to a fluid condition, forcing the fluid material into a mold, and finally forcing a solid body i 1 molten material and a mold perforated in the outward through the mouth or ingate of the mold. This method not only insures the complete separation of the superfluous material from the body of the article, leaving no projecting portions to be filed away; butit aids materially in forcing the material into every part of the mold.

In the operation of the apparatus which I j have shown as adapted for carrying my improved method into effect, the melting-pot being filled with the molten material, the baris swung against the nozzle 15 to cause the latter to enter the ingate of the mold, the bar 28 is locked to the bar 25 by the latch-lever 41 to hold the parts of the mold together, and

the plunger 37 is held in the position indiward, severing the very thin annulus of metal between itself and the inner end: of the i-ngate and expelling the metal from the in gate. When the material has cooled sufficiently to permit of the removal of the article from the mold, .the latch-lever 41 is reversed to cause its cam portion 43. to act upon the bar 28 or its handle 29 to separate the parts of the mold and release the finished article.

The details of'the construction may be varied widely to suit the requirements of different cases, the essential feature being the plunger fittingand moving through or into the ingate of the mold in a direction to expel the superfluous metal from the in-gate.

I claim as my invention- 1. The herein-described method of casting,

which consists in reducing the material to a fluid condition, forcing the same into a mold, and forcing a solid body through the in'gate of the mold outward to sever and expel the superfluous material, substantially asshown and described.

2; The combination of a two-part mold, hinged bars carrying the several parts of said ITO mold, and a latch-lever pivotally connected to one of said bars and provided with a lockingshoulder to engage and hold the other bar and with a cam to force said bars apart, substantially as shown and described.-

3'. The combination,'with a mold having a suitable ingate, of a plunger adapted to enter and fit within said ingate and means to move the plunger outwardly through the ine gate, substantially as shown and described.

4. The combination, with a mold perforated in the line of its ingate, of a plunger moving through said perforation and adapted'to enter it and fit snugly in the ingate, substantially as shown and described.

5. The combination, with a receptacle for material from said receptacle into said mold and a plunger moving through the perforation in the mold and adapted to enter and fit snugly in the ingate, substantially as shown and described. v

6. The combination, with a mold having a suitable ingate, of a plunger adapted to enter and fit said ingate, a lever to move said plunger outward through said ingate, anda latch! lever to engage said first-named lever and maintain the end of the plunger in proximity to the ingate, substantially as shown and described.

7. The combination of a twopart mold, hingedbars,oneofwhichbarscarriestheingate portion of the mold and is adapted to present CARL W. WEISS.

Witnesses:

A. N. JESBERA, A. WIDDER. 

